For limited company contractors: enter your day rate and working pattern to estimate company turnover, then see corporation tax, salary, dividends and personal take-home after all taxes.
Updated for 2026/27. Uses UK corporation tax, dividend tax and PAYE assumptions. Estimates only — not tax advice.
Calculate company tax Read the guidesTax calculator for UK limited company contractors 2026/27. Corporation tax, director salary, employer NI, dividends and personal take-home. Enter your day rate or profit.
Updated for 2026/27. Written and reviewed by James Whitfield against current GOV.UK and HMRC guidance · Editorial standards · Methodology. Estimates for planning only — not tax, accounting or financial advice.
Figures reviewed for the 2026/27 tax year (last updated July 2026). Source: GOV.UK.
This calculator lays out the full tax picture for a contractor operating through a limited company, rather than just the final take-home number. Contract income becomes turnover; you deduct allowable expenses to reach taxable profit; the company pays corporation tax on that profit (19% to £50,000, 25% over £250,000, marginal relief between). Only then is profit distributed, so the calculation stacks four separate charges: corporation tax, dividend tax, and National Insurance on any salary.
On a director's salary the company pays employer NI at 15% above £5,000, and you pay employee NI at 8% between £12,570 and £50,270 then 2%. Because single-director companies generally cannot claim the £10,500 Employment Allowance, the employer NI on a £12,570 salary is a real (though corporation-tax-deductible) cost. Dividends, drawn from post-corporation-tax profit, carry no NI but are taxed at 10.75%, 35.75% and 39.35% after the £500 allowance.
Allowable expenses reduce profit before all of this: accountancy fees, business travel and subsistence, equipment and software, use-of-home, professional indemnity insurance, and employer pension contributions. Getting expenses right lowers the corporation tax layer directly. Figures here are estimates for planning, not tax advice.
A limited company must keep its finances separate from personal accounts. These accounts are free to open.
Companies House now charges £100 to register a limited company online (up from £50 in February 2026). Same-day digital registration is £156. You can register directly at gov.uk or through a formation agent.